<template>
	<view class="preview" v-if="currentInfo">
		<swiper circular :current="currentIndex" @change="swiperChange">
			<swiper-item v-for="(item,index) in classList" :key="item._id">
				<image v-if="readImgs.includes(index)" @click="maskChange" :src="item.picurl" mode="aspectFill"></image>
				<!-- <image v-if="Math.abs(currentIndex - index) <= 1" @click="maskChange" :src="item.picurl" mode="aspectFill"></image> -->
			</swiper-item>
		</swiper>
		
		<view class="mask" v-if="maskState">
			<view class="goBack" @click="goBack" :style="{top:getStatusBarHeight()+'px'}">
				<uni-icons type="back" color="#fff" size="20"></uni-icons>
			</view>
			<view class="count">{{currentIndex+1}}/{{classList.length}}</view>	
			<view class="time">10:10</view>
			<view class="date">
				<uni-dateformat :date="new Date()" format="yyyy年MM月dd日"></uni-dateformat>
			</view>
			<view class="footer">
				<view class="box" @click="clickInfo">
					<uni-icons type="info" size="28"></uni-icons>
					<view class="text">信息</view>
				</view>
				<view class="box" @click="clickScore">
					<uni-icons type="star" size="28"></uni-icons>
					<view class="text">{{currentInfo.score}}分</view>
				</view>
				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="28"></uni-icons>
					<view class="text">下载</view>
				</view>
			</view>
		</view>
		
		<uni-popup ref="infoPopup" type="bottom">
			<view class="infoPopup">
				<view class="popHeader">
					<view></view>
					<view class="title">图片信息</view>
					<view class="close" @click="clickInfoClose">
						<uni-icons type="closeempty" size="20" color="#999"></uni-icons>
					</view>
				</view>
				<scroll-view scroll-y>
					<view class="content">
						
						<view class="row">
							<view class="label">图像ID：</view>
							<text  class="value" selectable>{{currentInfo._id}}</text>	
						</view>
						
<!-- 						<view class="row">
							<view class="label">分类：</view>
							<text  class="value class" selectable>{{currentInfo._id}}</text>	
						</view>						 -->

						<view class="row">
							<view class="label">发布者：</view>
							<text class="value">{{currentInfo.nickname}}</text>	
						</view>
						
						<view class="row">
							<view class="label">评分：</view>
							<view class="value roteBox">
								<uni-rate readonly :value="currentInfo.score"/>
								<text class="score">{{currentInfo.score}}</text>
							</view>
						</view>
						
						<view class="row">
							<view class="label">摘要：</view>
							<view class="value">{{currentInfo.description}}</view>
						</view>
						
						<view class="row">
							<view class="label">标签：</view>
							<view class="value tabs">
								<view class="tab" v-for="item in currentInfo.tabs" :key="tab">{{item}}</view>
							</view>
						</view>
						
						<view class="copyright">
							声明：xxxxxxxxxx
						</view>
						
						<view class="safe-area-inset-bottom"></view>
							
					</view>
				</scroll-view>
			</view>
		</uni-popup>
		
		<uni-popup ref="scorePopup" :is-mask-click="false">
			<view class="scorePopup">
				<view class="popHeader">
					<view></view>
					<view class="title">{{isScore?'已经评分过':'图片评分'}}</view>
					<view class="close" @click="clickScoreClose">
						<uni-icons type="closeempty" size="20" color="#999"></uni-icons>
					</view>
				</view>
				<view class="content">
					<uni-rate v-model="userScore" allowHalf 
					:disabled="isScore"
					disabled-color="#FFCA3E"/>
					<text class="text">{{userScore}}分</text>
				</view>
				<view class="footer">
					<button @click="submitScore" 
					:disabled="!userScore || isScore" 
					type="default" size="mini" plain>确认评分</button>
				</view>
				
			</view>			
		</uni-popup>
		
	</view>
</template>

<script setup>
import {ref} from "vue";
import {getStatusBarHeight,getTitleBarHeight,getNavBarHeight} from "@/utils/system.js";
import {apiSetupScore,apiWriteDownload,apiDetailWall} from "@/api/apis.js";
import {onLoad, onReachBottom,onShareAppMessage,onShareTimeline} from "@dcloudio/uni-app";

const classList = ref([])
const storgClassList = uni.getStorageSync("storgClassList") || [];
classList.value = storgClassList.map(item=>{
	
	return{
		
		...item,
		picurl:item.smallPicurl.replace("_small.webp",".jpg")
		
	}
	
})

const readImgs = ref([]);
const currentId = ref(null);
const currentIndex = ref(0);
const currentInfo = ref(null);
onLoad(async (e)=>{
	
	currentId.value = e.id;
	
	//判断页面是从哪里进入的，是分享页还是跳转
	if(e.type == "share")
	{
		let res = await apiDetailWall({
			id:currentId.value
		});
		classList.value = res.data.map(item=>{
			
			return{
				
				...item,
				picurl:item.smallPicurl.replace("_small.webp",".jpg")
				
			}
		});
	}
	
	currentIndex.value = classList.value.findIndex(item=>{
		
		return item._id == currentId.value
		
	})
	
	currentInfo.value = classList.value[currentIndex.value]
	
	readImgs.value.push(
			currentIndex.value <= 0 ? classList.value.length-1 : currentIndex.value-1,
			currentIndex.value,
			currentIndex.value >= classList.value.length - 1 ? 0 : currentIndex.value+1
		);
	readImgs.value = [...new Set(readImgs.value)];
	
	console.log(e.id);
	
})

const swiperChange = (e) =>{
	
	console.log(e);
	currentIndex.value = e.detail.current;
	currentInfo.value = classList.value[currentIndex.value]
	readImgs.value.push(
		currentIndex.value <= 0 ? classList.value.length-1 : currentIndex.value-1,
		currentIndex.value,
		currentIndex.value >= classList.value.length - 1 ? 0 : currentIndex.value+1
	);
	readImgs.value = [...new Set(readImgs.value)];
}

//隐藏文字，只显示图片
const maskState = ref(true)
const maskChange = ()=>{
	
	maskState.value = !maskState.value
	
}

//点击信息弹出
const infoPopup = ref(null)
const clickInfo = ()=>{
	
	infoPopup.value.open();
	
}

//点击关闭信息弹出
const clickInfoClose = function(){
	
	infoPopup.value.close();
	
}

//评分弹窗
const scorePopup = ref(null);
const isScore = ref(false);
const clickScore = function(){
	
	if(currentInfo.value.userScore){
		isScore.value = true;
		userScore.value = currentInfo.value.userScore;
	}
	
	scorePopup.value.open();
	
}

//关闭评分框
const clickScoreClose = function(){
	
	scorePopup.value.close();
	userScore.value = 0;
	isScore.value = false;
	
}

//点击提交评分
const userScore = ref(0)
const submitScore = async()=>{
	
	uni.showLoading({
		title:"加载中..."
	})
	
	console.log("评分了")
	//提交评分api
	
	let {classid,_id:wallId} = currentInfo.value;
	
	let res = await apiSetupScore({
		classid,
		wallId,
		userScore:userScore.value
	})
	
	uni.hideLoading();
	
	if(res.errCode === 0)
	{
		uni.showToast({
			title:"评分成功",
			icon:"none"
		})
		
		//把用户评分存储到本地
		classList.value[currentIndex.value].userScore = userScore.value;
		uni.setStorageSync("storgClassList",classList.value);
		
		clickScoreClose();
	}else{
		uni.showToast({
			title:"评分失败",
			icon:"none"
		})
	}
	
	console.log(res);
	
}

//点击下载
const clickDownload = async ()=>{
	
	// #ifdef H5
	uni.showModal({
		content:"请长按保存壁纸",
		showCancel:false
	})
	// #endif
	
	// #ifndef H5
	
	try{
	
		uni.showLoading({
			title:"下载中...",
			mask:true
		})
		
		//调用后端接口
		let {classid,_id:wallId} = currentInfo.value;
		let res = await apiWriteDownload({
			
			classid,
			wallId
			
		})
		if(res.errCode != 0)
		{
			throw res;
		}
		
		
		uni.getImageInfo({
			src:currenInfo.value.picurl,
			success: (res) => {
				
				uni.saveImageToPhotosAlbum({
					filePath:res.path,
					success: (res) => {
						console.log(res);
						uni.showToast({
							title:"保存成功，请到相册查看",
							icon:"none"
						})
					},
					fail:err=>{
						
						if(err.errMsg == 'saveImageToPhotosAlbum:fail cancel'){
							uni.showToast({
								title:"保存失败，请重新点击下载",
								icon:"none"
							})
							
							return;
						}

						uni.showModal({
							title:"授权提升",
							content:"需要授权保存相册",
							success: res => {
								if(res.confirm){
									uni.openSetting({
										success(setting) {
											if(setting.authSetting['scope.writePhotosAlbum']){
												uni.showToast({
													title:"获取授权成功",
													icon:"none"
												})
											}else{
												uni.showToast({
													title:"获取授权失败",
													icon:"none"
												})
											}
										}
									})
								}
							}
						})
					},
					complete() {
						uni.hideLoading();
					}
				})
				
			}
		})
	
	}catch(err){
		
		console.log(err);
		uni.hideLoading();
		
	}
	
	// #endif
	
}

//返回上一页
const goBack = function(){
	
	uni.navigateBack({
		
		success: () => {
			
		},
		fail: (err) => {
			uni.reLaunch({
				url:"/pages/index/index"
			})
		}
		
	})
	
}


//分享给好友
onShareAppMessage((e)=>{
	
	return{
		title:"图库",
		path:"/pages/preview/preview?id="+currentId.value+"&type=share" 
	}
	
})

//分享到朋友圈
onShareTimeline(()=>{
	
	return{
		title:"图库",
		//imageUrl:'xxx'
		query:"id=" + currentId.value 
	}
	
})
	
</script>

<style lang="scss" scoped>

.preview{
	
	width: 100%;
	height: 100vh;
	position: relative;
	
	swiper{
		
		width: 100%;
		height: 100%;
		
		image{
			
			width: 100%;
			height: 100%;
			
		}
		
	}
	
	.mask{
		
		&>view{
			
			position: absolute;
			left: 0;
			margin: auto;
			color: #fff;
			right: 0;
			width:fit-content;
		}
		
		.goBack{
			
			width: 38px;
			height: 38px;
			background: rgba(0, 0, 0, 0.5);
			left: 30rpx;
			top: 0;
			margin-left: 0;
			border-radius: 100px;
			border: 1rpx solid rgba(255, 255, 255, 0.3);
			
			display: flex;
			align-items: center;
			justify-content: center;
			
		}
		
		.count{
				
			top: 10vh;
		
			background: rgba(0, 0, 0, 0.3);
			font-size: 28rpx;
			
			border-radius: 40rpx;
			padding: 8rpx 28rpx;
			backdrop-filter: blur(10rpx);
			
		}
		
		.time{
			
			font-size: 140rpx;
			top: calc(10vh + 80rpx);
			font-weight: 100;
			line-height: 1em;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}
		
		.date{
			font-size: 34rpx;
			top: calc(10vh + 230rpx);
			text-shadow: 0 2rpx rgba(0, 0, 0, 0.3);
		}
		
		.footer{
			
			background: rgba(255 , 255, 255, 0.8);
			bottom: 10vh;
			width: 65vw;
			height: 120rpx;
			border-radius: 120rpx;
			color: #000;
			display: flex;
			justify-content: space-around;
			align-items: center;
			box-shadow: 0 2rpx 0 rgba(0, 0, 0, 0.1);
			backdrop-filter: blur(10rpx);
			
			.box{
				
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				padding: 2rpx 12rpx;
				
				.text{
					
					font-size: 26rpx;
					color: $text-font-color-2;
					
				}
				
			}
			
		}
		
	}
	
	.popHeader{
		
		display: flex;
		justify-content: space-between;
		align-items: center;
		.title{
			color: $text-font-color-2;
			font-size: 26rpx;
		}
		.close{
			
			padding: 6rpx;
			
		}
	}
	
	.infoPopup{
		
		background: #fff;
		padding: 30rpx;
		border-radius: 30rpx 30rpx 0 0;
		overflow: hidden;
		
		
		
		scroll-view{
			
			max-height: 60vh;
			
			.content{
				
				.row{
					
					display: flex;
					padding: 16rpx 0;
					font-size: 32rpx;
					line-height: 1.7em;
					
					.label{
						
						color: $text-font-color-3;
						width: 140rpx;
						text-align: right;
						font-size: 30rpx;
					}
					
					.value{
						
						flex: 1;
						width: 0;
						
					}
					.roteBox{
						
						display: flex;
						align-items: center;
					
						.score{
							
							font-size: 26rpx;
							color: $text-font-color-3;
							padding-left: 20rpx;
						}
						
					}
					.tabs{
						
						display: flex;
						flex-wrap: wrap;
						
						.tab{
							
							border: 1px solid $brand-theme-color;
							color: $brand-theme-color;
							font-size: 22rpx;
							padding: 10rpx 30rpx;
							border-radius: 40rpx;
							line-height: 1em;
							margin: 0 10rpx 10rpx 0;
							
						}
						
					}
					.class{
						
						color: $brand-theme-color;
						
					}
					
				}
				.copyright{
					
					font-size: 28rpx;
					padding: 20rpx;
					background: #f6f6f6;
					color: #666;
					border-radius: 10rpx;
					margin: 20rpx 0;
					line-height: 1.6em;
					
				}
				
			}
			
		}
		
	}
	
	.scorePopup{
		
		background: #fff;
		padding: 30rpx;
		width: 70vw;
		border-radius: 30rpx;
		.content{
			
			padding: 30rpx 0;
			display: flex;
			justify-content: center;
			align-items: center;
			
			.text{
				padding-left: 10rpx;
				color: #ffca3e;
				width: 100rpx;
				line-height: 1em;
				text-align: right;
			}
		}
		.footer{
			
			padding: 10rpx 0;
			display: flex;
			align-items: center;
			justify-content: center;
			
		}
	}
	
}
 
</style>  
